A floater group of pyritohedral crystals without minor forms, with very well-defined faces and edges, very bright and partially coated by growths of calcite microcrystals. The specimen is from a locality where good Pyrite specimens are not so common.
Concepción del Oro, Municipio Concepción del Oro, Zacatecas Mexico
Specimen size: 7.5 × 6.2 × 3.7 cm = 3.0” × 2.4” × 1.5”

Aggregate of cubic Pyrite crystals with echeloned growths and polycrystalline formations on the cube faces. They are very well defined, bright and on a Dolomite matrix and with lenticular Calcite crystals. While well known and relatively common at Trepča, Pyrite is not easily found there as significant collectible samples and less so with such quality as this.
Stan Trg (Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District Kosovo (1994-2002)
Specimen size: 7.4 × 6.7 × 5.9 cm = 2.9” × 2.6” × 2.3”